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Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See exine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the outer layer of a pollen grain or spore; the exine

from The Century Dictionary and Cyclopedia

  • n. Same as exospore.

Etymologies

New Latin : exo- + Greek sporā, spore; see sper- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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